Method and device for determining load points outside power supply radius of low-voltage power supply region

The invention relates to a method and device for determining load points outside a power supply radius of a low-voltage power supply region. The method comprises the following steps: acquiring a power supply circuit diagram of the low-voltage power supply region, wherein the power supply circuit diagram comprises a transformer node, a plurality of wire rod nodes and a plurality of load nodes, each node has preset type information and name information, and the interval between every two directly connected nodes is a preset routing length; finding out the transformer node from the power supply circuit diagram according to the type information; respectively determining power supply circuits of the transformer node and each load node by taking the transformer node as a starting point and respectively taking the load nodes as terminal points; and respectively calculating the lengths of the power supply circuit from the transformer node to each load node according to the name information of each node in each power